Dispensing valve



Dec. 19, 1933. E, F. LEESE 1,939,709

DISPENSING VALVE Filed March 22, 1952 INVENTOR EdwardFLeese 2 TIT- BY lM 0 NEY Patented Dec. 19, 1933 UNITED STATES PATENT OFFICE one-third toHoward S.

Wash.

Bargreen, Everett,

Application March 22, 1932. Serial No. 600,479

7 Claims.

My invention relates to dispensing valves and more particularly to avalve intended to dispense liquids--for instance, coffee from arestaurant coffee urn.

The main object of my invention is to provide a tight dispensing valvewhich will eliminate dripping of hot or cold liquids.

Another object is to provide a valve of a normal size but doubling itsvalve surface.

Another object is to provide valve surfaces of suchsize relative to theoutlet and of such tight fitting qualities that dripping is eliminated.

A further object is to provide a valve having a common spring serving adouble purpose, that is, one end of the spring pressing the valveagainst its seat while the other end is pressing against packing toprevent leakage between the valve stem and easing.

Another object is to provide a valve of simple construction, yet strongand durable, one which may easily be taken apart for cleaning andrepairs.

My invention comprises the novel parts, and the novel combination andarrangement thereof, as shown in the drawing, described in thisspecification, and as will be pointed out in the appended claims.

Fig'ure 1 is a plan view of the dispensing valve, and Figure 2 is anaxial section thereof.

Figure 3 is a vertical section taken on the line 3-3 of Figure 1.

Figures 4 to 6 inclusive are sectional plan views of a modified form ofvalve, showing it in different positions.

A valve casing 1, preferably cylindrical in shape and closed at itsbottom at 10 and open at its top, has an inlet port or passage 11 and anoutlet 12 of small diameter relative to the casing and offset from theaxis thereof, conveniently formed as a down spout. The 'outlet area maybe of the order of one-twentieth the area of the casing bottom. Theinlet is threaded at 13 so that the valve casing or the complete valvemay be easily and quickly secured upon the device (not shown) to whichit may be applied, such as a coffee urn.

Instead of using the bottom of the casing 10 as a valve seat, as itmight be used, it is preferable to insert a disc-like valve seat 2,having a passage 20 in registry with the outlet 12. The 'valve seat isheld against rotation by a pin 21, fixed in the seat and projecting intoa recess 14 in the base of the valve casing, and may be cemented orotherwise secured within the casing, so that, in effect, it becomes thebottom of the casing. The upper surface of the valve seat may be groundor finished in any suitable manner before it is positioned within thecasing, and the employment of the separate seat 2 is to facilitate thisoperation.

Seated upon the valve seat 2 for rotation thereon is a disc-shaped valvebody 3, having a passage 30 which will register with the inlet 11 of thecasing and with the passage 20 of the valve seat 2, when the valve is inthe open position. The underside of the valve body may also be ground toa perfect lit with the valve seat, before being installed Within thecasing.

The upper side of the valve body is provided with a central upstandingboss 31, having a slot 7 32 through its axis, in which is received atongue 40, formed upon the lower end of a valve stem 4. In order thatthe valve stem may be seated in actual axial alignment with the valvebody, a depending reduced stub shaft 42 is seated in an ax'al bore 34 atthe bottom of the slot 32.

To enclose the upper end of the open casing and guide the valve stem foraxial rotation, a cover 5 may be provided having an axial bore 50 actingas a bearing to support the valve stem, 0 said cover being threaded orotherwise removably secured upon the upper end of said casing. The covermay also be provided with an enlarged axial recess 51, into which theupstanding boss of the valve body projects. The valve stem 4 is providedwith a suitable flange 41, positioned within the recess 51.- Packing maybe placed between the flange 41 and cover 5 to prevent leakage betweenthe stem 4 and cover. In order to apply pressure upon the valve body, sothat the valve body and seat always maintain a tight fit, and at thesame time apply constant pressure upon the packing to thereby preventleakage, a spring 6 may be interposed between the flange 41 and thevalve body within the recess 51. A handle 7, secured in position uponthe upper end of the valve stem, may be provided to rotate the valvebody.

In the modified form of my invention, as illustrated in Figures 4 to 6inclusive, a rotative' 1 0 valve seat 2 is provided instead of anon-rota tive one as heretofore described. In the modified form Iprovide a double valve surface, that is, one formed between the valveseat and the bottom of the casing, and another between the valve bodyand the valve seat. This may conveniently be done by eliminating the pin21, thereby making the valve seat capable of rotation. In order torotate the valve seat 2, an

arcuate slot 25 is formed in this valve seat, 110

of a length equal to about 45, into which projects a pin 35 dependingfrom the valve body 3. The pin is so positioned, with respect to theslot, that movement of the valve body for substantially 45 moves the pinfrom one end of the slot, illustrated in Figure 4, to the other endthereof, indicated in Figure 5. The passage 30 has moved out ofalignment with the inlet 11 and passage 20 and outlet 12, therebyclosing the passage through the valve body proper. A continued movementof the valve body engages the pin 35 with the end of the slot, therebymoving the valve seat until the valve body has moved another 45, or 90in all, at which time the valve seat has moved substantially 45, and thepassage 20 has moved out of alignment with the outlet 12, as shown inFigure 6. In this view, both the passages 30 and 20 are out of alignmentwith respect to each other and to the outlet 12 as well, therebyproviding a double valve seat.

To open the valve and position the passages 30, 20 and 12 in alignment,the valve body movement is reversed. The first 45 of movement of thevalve body moves the pin 35 to the other end of the slot 25, with thepassages 30 and 15 coming into alignment. The remaining 45 of movementmoves the valve body and valve seat, then pinned together and with theirpassages in alignment, into registry with the outlet 12.

What I claim as my invention is:

1. In a dispensing valve, a cylindrical casing having a inlet connectionand a bottom outlet offset from its axis, a valve body within the easinghaving a passage adapted to register with the inlet and outlet, and tobe rotated out of registry therewith, a handle concentric with thecasing and valve body, and engageable with the latter by relative axialmovement, and a spring bearing upon the top of the valve body, to pressthe latter to a seat at the bottom of the casing, the bottom outletbeing of the order of one-twentieth the area of the casing bottom, andbeing diametrically remote from the inlet connection.

2. In a dispensing valve, a cylindrical casing having an inletconnection and a bottom outlet oilset from its axis, a non-rotativevalve seat which is plane over its entire upper seating surface receivedwithin said casing at its bottom and having a passage adapted toregister with said casing outlet, a valve body within'the casing havinga plane lower surface and having a passage adapted to register with theinlet of the casing and with the outlet of said valve seat, and to berotated out of registry therewith, a handle concentric with the casingand valve body, and engageable with the latter by relative axialmovement, and a spring bearing upon the top of the valve body to pressthe latter to seat against said valve seat.

3. In a dispensing valve, a cylindrical casing open at its top, havingan inlet connection and a plane bottom with an outlet offset from itsaxis, a valve body within the casing having a plane lower surface andhaving a passage adapted to register with the inlet and outlet,;and tobe rotated out of registry therewith, a cover closing said open end ofthe casing, a handle received in the cover concentric with the casingand valve body, and engageable with the latter by relative axialmovement, and a spring bearing upon the top of the valve body, to pressthe latter to seat at the bottom of the casing.

4. In a dispensing valve, a cylindrical casing open at its top, havingan inlet connection and a bottom outlet offset from its axis, a valvebody within the casing having a passage adapted to register with the.inlet and outlet thereof, and adapted to be rotated out of registrytherewith, a cover removably secured in the open end of said-casing andhaving an axial bore, a valve stem received in said bore and engageablewith said valve body by relative axial movement, to rotate the same, aflange upon said stem within said bore, packing positioned between saidflange and the cover, and a spring interposed between said valve bodyand stem flange, to press the valve body to a seat at the bottom of thecasing and the flange against said packing.

5. In a dispensing valve, a cylindrical casing having an inletconnection and a bottom outlet offset from its axis, a valve seatreceived within the casing at its bottom and having a passage adapted toregister with the casing outlet, a valve body within the casing having apassage adapted to register with the inlet thereof and the outlet ofsaid valve seat, means connecting said valve seat to said valve body forrelative rotation, whereby the passage of the valve seat and passage ofthe valve are moved out of alignment with the outlet in the casing, andwith each other, a handle engageable with the valve body to rotate it,and means to press the valve body against said valve seat, and thelatter against the bottom of the casing.

6. In a dispensing valve, a cylindrical casing having an inletconnection and a bottom outlet offset from its axis, a valve seatreceived within and at the bottom of the casing, and having a passageadapted to register with the casing outlet, and having an arcuate slotsubstantially 45 long, a valve body withiri the casing having a passageadapted to register with the inlet thereof and passage of the valveseat, a pin depending from the valve body and receivable in said valveseat slot, whereby movement of the valve body through approximately 90advances the valve seat 45, and the valve body passage and the valveseat passage each out of registry with their respective passage and thecasing outlet, a han- -dle engageable with the valve body to rotate it,and a spring pressing down upon the top of the valve body to press thelatter against the valve seat, and the valve seat against the bottom ofthe casing. 7. In a dispensing valve, a casing of circular horizontalcross-section having an inlet connection and a bottom outlet ofiset fromits vertical axis, a valve body closely fittingwithin the casing andhaving a passage adapted to register with the inlet and outlet, and tobe rotated out of registry therewith upon movement of said valve bodythrough an angle less than 60 degrees,

means to rotate said valve body;v and a spring 7 bearing upon the top ofthe valve body, to press the latter to a seat at the bottom of thecasing. EDWARD F. LEESE.

